CSI Engineering LLC is home to a team of experienced engineers and support staff with extensive project design and construction administration know-how. Our professionals are esteemed for their excellence in their specific fields. Operating from Portsmouth, located in the heart of Seacoast NH, CSI Engineering is excellently placed to provide comprehensive service to the New England Region. While our central focus remains on New England, our successful project history extends to other states and even overseas.
Services
CSI Engineering excels at creating integrated, efficient, high-tech mechanical systems for various building needs, including ventilation, heating, equipment analysis, selection, replacement, ductwork installation, and instrument and control placement. Our designs always meet or exceed state and federal codes while consistently surpassing energy-efficiency requirements. 
Whether it's for code adherence, improved efficiency, renovations, or construction, CSI Engineering is committed to delivering dependable, innovative plumbing systems unparalleled in quality. Our design team prioritizes clients' needs, ensuring custom, energy-efficient, and code-compliant solutions every time. 
Whether redesigning a CT scan lab or constructing a large-scale 40,000-square-foot educational institution, CSI Engineering ensures top-tier electrical system designs. Always innovative and efficient, our solutions are timely, within budget, and perfectly tailored for your needs. 
CSI Engineering specializes in designing top-notch fire protection systems for both new buildings and renovations. Utilizing the most advanced fire protection technologies, we bring forth inventive solutions for projects of all sizes. Our engineers manage everything from code assessments to comprehensive fire system overhauls, prioritizing safety and business continuity.
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